as the air rises, it condenses as it cools so there is more energy in the atmosphere for heavier rain. >> this side of 81, east of 95, it is done primarily to give you a locator. however, you will find that, in the wintertime, when weather people talk about the snow, the rain-snow line, it pretty closely corresponds with the 95 corridor. that is interesting, 95 wasn't place there had so that it would correspond with that. so frequently during the wintertime, we'll say east of 95 because that is where the rain high pressure snow line is. >> if i can make one other quick comment. reagan national sort of an interesting spot because it is right on the potomac river. that is where our official readings are. the water has an influence on our temperature. >> thank you, corey, for the question. hope we answered that for for you. if you have a question you want answered, go to myfoxdc.com and click on the weather tab. you are listening to hot child in the city by nick guilder. >> knew the song. didn't know the artist. >> all right. late get to our hot traffic lady, julie wright. >> all right.